baber/WOPTO huggingface dataset:
Patent GB-779488-A (GB)
Title: Improvements in or relating to dry rectifier assemblies
IPC: H01L25/03
Filed: 1953-02-18
Abstract: 779,488. Dry rectifiers; couplings. SIEMENS - SCHUCKERTWERKE AKT. - GES. Feb. 18, 1953 [Feb. 18, 1952], No. 4571/53. Classes 37 and 38 (1). Two base plates each carrying semi-conductor and counter electrode layers but each having edge zones free of these layers are mechanically connected along the outer edge only of the edge zones so that the plates form a corrosionproof casing in which the layers are isolated from the connection by a region free of them. In Figs. 1 and 2, the plates 1, 2 are dished and are fixed together at 1a, 2a by welding, soldering or glueing. They may also be joined by independent overlapping end pieces or through overlapping parts formed integral with the plates. A layer of metal or insulating material, such as a ceramic inter-loop soldered to both plates, may be put between the plates which may in this case be flat, and the entire exterior may be protected by a coating of cadmium, while the interior is filled with a solid or liquid corrosion-proof protecting material. A lead 3 passes through a plug 4 of insulating material between the edges of the plate and forms part of a T-shaped plate, the cross-member 5 of which is corrugated to make resilient electrical contact with the counter electrodes. In a modification a single carrier plate has two such coated regions and is folded between them to give a partly formed container. Exterior connection to the counter electrode layers may be made through the plates as in Fig. 4. The corrugated plate 13 is held between the head of a conducting bolt 17 and an insulating washer 14. Further washers 15 and 16 insulate the bolt from the case while the whole assembly is held together by the nut 18. Specification 681,790 is referred to.
Patent GB-1484977-A (GB)
Title: Container for drinking-water
IPC: B65D30/08
Filed: 1975-02-04
Abstract: 1484977 Coated products DEUTSCHE KATADYN GmbH 4 Feb 1975 [12 Feb 1974] 4678/75 Heading B2E [Also in Division B8] An airtight bag is made from polyester foil substantially 12 microns thick with a coating of polyethylene applied thereto at a thickness of 75 g/m<SP>2</SP>.
Patent GB-539667-A (GB)
Title: Manufacture of styrene derivatives
IPC: C07C17/25
Filed: 1940-03-13
Abstract: 539,667. Halogenated styrene derivatives. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. I.). March 13, 1940, No. 4694. [Class 2 (iii)] Chlorostyrenes containing from three to five nuclear chlorine atoms are prepared by submitting the corresponding alpha-chloroethyl chlorbenzenes to a pyrolytic decomposition or to treatment with a base such as alcoholic potassium hydroxide. For the pyrolytic decomposition the compounds are heated to temperatures between their boiling points and 50‹ C. above this, when evolution of hydrogen chloride readily occurs. The preferred method of carrying out the process is to distill the alpha-chloroethyl chlorbenzene through a packed column. Alternatively a charge of the material is heated in a vessel until hydrogen chloride is no longer evolved. The presence of actinic light is desirable in the preparation of the starting materials of the invention by the chlorination of ethyl benzene. The chlorination product so obtained is distilled in vacuum at a temperature below 150‹ C. to separate the reaction mixture into its components. In examples (1) Ethyl trichlorobenzene is chlorinated in the presence of actinic light, the product distilled in a vacuum and the fraction distilling at 130‹-152‹ C. under 10 mms. pressure and consisting of the isomers of monochloroethyltrichlorbenzene was distilled at normal pressure to give a mixture of the isomers of trichlorostyrene, (2) ethyl tetrachlorobenzene is chlorininated as in example (1) and distilled under reduced pressure and the tetrachloro chlorethyl benzene distilled three times under normal pressure to give tetrachlorostyrene, (3) alphachloroethyl-pentachlorbenzene is distilled through a packed column to give the corresponding chloro-styrene, (4) alphachloroethylpentachlorobenzene is heated in alcoholic potash solution to give the same compound as obtained in example (3). The compounds of the invention are particularly useful as dielectric liquids. Specification 486,501 is referred to.
Patent GB-193423-A (GB)
Title: Improvements in knitted fabrics
IPC: D04B1/00
Filed: 1923-02-19
Abstract: 193,423. Textilwerk Akt.-Ges., (Assignees of Hausser, E.). Feb. 20, 1922, [Convention date]. Knitted fabrics.-Transverse binding-threads b, c are interlaced in the loops of a knitted fabric as shown. More than two threads or the thread b or c only may be interlaced in each row.
Patent GB-266379-A (GB)
Title: Process and apparatus for electro depositing chromium
IPC: C25D21/02
Filed: 1927-02-19
Abstract: 266,379. Jackson, L. Mellersh-, (Siemens & Halske Akt.-Ges.). Feb. 19, 1927. Drawings to Specification. Chromium, depositing; electrodes, heating and cooling.-In chromium plating the temperature of the bath is maintained within prescribed limits by the use of a hollow anode through which cooling or heating medium such as water or steam is passed. The anode may be a flat spiral or sinuous coil of lead pipe. Two anodes may extend along opposite sides of the cell, the cathodes being hung from a central busbar. The electrolyte may contain 500 gms. of chromic acid and 4 gms. of chromium sulphate Cr2(SO4)3.18H2o per litre. A suitable temperature is 30‹ + 2‹ C.
Patent GB-538893-A (GB)
Title: Improvements in or relating to stretchers
IPC: A61G1/01
Filed: 1940-03-14
Abstract: 538,893. Stretchers. GASSELT, A. J. M. VAN, March 14, 1940, No. 4762. Convention date, Nov. 3. 1939. [Class 108 (i)] A stretcher consists of a rollable length 1 of textile &c. material with carrying means such as hand-holes 4 and 5 and provided with one more drawing, members 6, 7 attached to that end of the length 1- which is innermost when the length is rolled up for carriage, the roll being unrolled under the patient by pulling upon the drawing-members. In the Specification as open to inspection under Sect. 91 there are shown and/or described constructions provided with means such as longitudinal hems for receiving sticks or tubes and with transverse bands having loops for holding the stretcher taut. This subject-matter does not appear in the Specification as accepted.
Patent GB-582122-A (GB)
Title: Improvements in luminescent materials
IPC: C09K11/77
Filed: 1941-04-10
Abstract: 582,122. Luminescent materials. GENERAL ELECTRIC CO., Ltd., JENKINS, H. G., McKEAG, A. H., and RANBY, P. W. April 10, 1941, No. 4764. [Class 39 (i)] A luminescent material with substantial after-glow when excited by cathode or X-rays consists of an alkaline earth phosphate activated with dysprosium. In one method of manufacture, calcium carbonate is formed from determined quantities of calcium chloride and ammonium carbonate, the chloride having been purified by ammonium sulphide; 40 grams of the dried carbonate is mixed with 52 grams diammonium hydrogen phosphate and 50 ml. solution of dysprosium sulphate with 0.1 per cent of dysprosium. The mixture is dried, ground, fired at 1050-1100‹ C. in air and then lightly ground. In another method, calcium carbonate is dissolved in dilute hydrochloric acid and the phosphate formed from this solution. In a third method, carbonate is formed as in the first method and dilute phosphoric acid is used therewith to form the phosphate. Barium or strontium may be used instead of or mixed with the calcium; the phosphate radical is preferred as the meta- or ortho-phosphate. Some terbium may be added to the dysprosium. Specification 490,663 is referred to.
Patent GB-455211-A (GB)
Title: Improvements in or relating to tobacco pipes and cigar or cigarette holders
IPC: A24F3/02
Filed: 1935-02-14
Abstract: 455,211. Tobacco pipes. TARBOX, J. P., 5025, Schuyler Street, Germantown, Pennsylvania, U.S.A.-(also Assignee of Jellinghaus, N. K.) Feb. 14, 1935, No. 4788. Convention date, March 1, 1934. [Class 130] A tobacco pipe or cigar or cigarette holder is.provided between the bowl and mouthpiece with a chamber fitted with a piston which is movable to clean the chamber by ejecting the contents through a valve-controlled port. Fig. 1 shows a pipe in which the chamber 14 in the stem is formed by a tube 20 containing a piston 15, the rod 16 of which extends through a closure 19 at the bowl end of the tube and is fitted with a ring 24 for operating the piston. The tube 20 has a valve port 17 which normally opens to the bowl as shown, but, when cleaning is to be effected, is brought by rotation of the tube 20 into line with an atmospheric opening 18, through which the contents of the chamber are ejected. When the piston 15 is in the position shown, the smoke flows past it through a slot 22 in the tube 20. In a modification, the piston 15 and rod 16 may be formed in one piece, which is cut away to form the chamber 14 as shown in Fig. 4. The bowl may be provided with a perforated grate 29 supported by rods 30 fitting the sides of the bowl. The bowl may also be formed of an inner shell 34 of duralumin or other metal having radial ribs 35, over which is fitted an outer insulating-shell 36. The rods 30 may also then be secured to the top of the shell 36 so as to be removable therewith. Applications of the invention are described to pipes having bowls coaxial with their stems, or to cigarette or cigar holders, the cleaning- piston being operated by sliding the stem through the bowl, so that a disc on the end of the stem also acts to eject the contents of the bowl. Fig. 15 shows another form of pipe in which the piston rod 16 is hollow and has an aperture 22 which, when the pipe is in use, communicates with the chamber 14 to provide the draught. The piston rod is attached to the mouthpiece so as to be withdrawn therewith, as shown, for cleaning, the contents of the chamber 14 being ejected at 18. An absorbent pad 55 may be fitted around the piston rod. The grate 29 of the bowl is attached thereto by a screw 52.
Patent GB-795957-A (GB)
Title: Graphite suspension and method of making the same
IPC: F02B3/06
Filed: 1955-02-17
Abstract: A stable graphite suspension is made by dispersing finely-divided graphite in a plastic, sticky, aliphatic hydrocarbon polymer or copolymer having a molecular weight of at least 10,000, to form a mixture composed substantially wholly of carbon and hydrogen, milling the mixture between rotating rolls under high pressure to reduce the size of the graphite particles, and dissolving in a liquid hydrocarbon medium.  The hydrocarbon medium may be a mixture of a lubricating oil and a volatile solvent, e.g. hexane or petroleum benzine.  On heating the solution, the polymer depolymerizes and distils off together with the volatile solvent, leaving a graphite suspension which may be added to lubricating oils, diesel oils or gasoline; addition to a gasoline containing tetra-ethyl lead results in reduced deposition of lead in an engine.  The graphite particles have an average size of less than 0.1 micron.  Suitable polymers and copolymers are derived from isobutylene, ethylene, partially depolymerized rubber, butadiene, propylene, isoprene and n-butylene. In examples, polyisobutylene of molecular weight 60,000, and polyisoprene of molecular weight 300,000, are used; milling takes place between horizontal cylindrical rolls rotating at different speeds.  Specification 535,293 is referred to.
Patent GB-1380587-A (GB)
Title: Inter-vehicle signalling means
IPC: B61L23/34
Filed: 1971-02-17
Abstract: 1380587 Intervehicle signalling arrangements EMI Ltd 13 March 1972 [17 Feb 1971] 4837/71 Heading G4H A travelling vehicle transmits coded signals indicative of its position and motion and receives similarly coded signals from a preceding vehicle, decodes them and compares its own position with that of the preceding vehicle to determine their distance apart. On receiving coded signals from more than one vehicle all the position signals are compared and the vehicle closest ahead determined. To describe the motion of a vehicle signals indicative of speed and acceleration are transmitted and on determining the closest ahead vehicle the relative speeds of the two vehicles are computed. Each vehicle detects the passage of equally spaced markers on the highway, such as radio frequency or optical transmitters, magnetic optical or inductive coding devices, to which its position is referred, positions in between the markers being interpolated from the odometer output. The position, speed and acceleration are transmitted from a vehicle as binary coded radio frequency signals.
Patent GB-1173404-A (GB)
Title: Apparatus and Method for Cleaning Wiping Cylinders in Rotary Printing Presses
Inventor: GIORI GUALTIERO
IPC: B41F35/00
Filed: 1968-01-30
Abstract: 1,173,404. Printing-apparatus. G. GIORI. 30 Jan., 1968 [3 Feb., 1967], No. 4844/68. Addition to 1,123,811. Heading B6C. Apparatus for wiping an intaglio printing plate mounted on a cylinder 1 comprises a wiping roller 2 co-operating with the cylinder 1 and engaged by a plurality of brushes 20 immersed in a cleaning solution 5 in a fountain 4, a first nozzle 17 for spraying cleaning solution on the periphery of the roller 2, and a second nozzle 10 adapted to spray clean water on the roller subsequent to the spraying of cleaning solution. Two flexible blades 14, 16 engage the roller 2, one on each side of the nozzle 17, and a further blade 11 removes excess water from the roller 2. Cleaning solution removed by the blade 16 is drained into a container 18 via a plane 19. A felt-covered rubbing roller 12 removes any traces of ink &c. remaining on the roller 2. A device 28 causes the roller 12 to rotate through a certain arc when a specified thickness of ink &c. has built up on its periphery.
Patent GB-1299802-A (GB)
Title: Induction plasma generator
IPC: F03H1/00
Filed: 1970-02-02
Abstract: 1299802 Induction coupled plasma generators HUMPHREYS CORP 2 Feb 1970 [3 Fob 1969] 4853/70 Heading H5H The invention of Specification 1,231,093 is modified in that an annular stream of a buffer gas is supplied between the auxiliary sheath gas and main plasma gas. The buffer gas is supplied at a velocity intermediate the velocities of said plasma gas and said sheath gas, and thus moderates the velocity transition between the plasma core gas and the sheath gas. The stabilizing structure or transition channel structure comprises a plurality of axially extending, spaced tubes 200 disposed in a ring and supplied with a coolant. The upper ends of each pair of tubes 200 are soldered together to provide a return flow passage for the coolant as in Specification 1,299,803. Outside the ring of tubes 200 is a buffer tube 202 of quartz and then the plasma chamber tube 66<SP>11</SP> surrounded by coil 64<SP>11</SP>. Reference has been directed by the Comptroller to Specification 1,231,093
Patent GB-189703-A (GB)
Title: A new or improved device for facilitating the opening of oysters and like shell fish
IPC: A47G21/06
Filed: 1922-02-20
Abstract: 189,703. McConachie, R. G. Feb. 20, 1922. Shellfish breakers and openers.-A device for facilitating the opening of shellfish comprises curved strips forming a cradle b<1> for the shell, a co-operating pivoted clamping-jaw C, and a rotarv advanced cutter d<3> which removes a portion of the shell to allow an opening implement to be inserted. A casing A having openings a, a<1> is secured to the base-plate by tongues a<2> and is provided with a screwed boss c<2> for a spindle c' having a ball and split-socket connection with the clamping-jaw C, and a boss d<2> receives the spindle d<1> of the cutter.
Patent GB-869144-A (GB)
Title: Interpolymers
IPC: C08F8/14
Filed: 1958-02-14
Abstract: Modified copolymers are prepared by forming a copolymer of a non-carboxylic vinyl compound or mixture of such compounds with a minor proportion of an a -, b -unsaturated carboxylic acid and reacting this copolymer with a polyfunctional alcohol or a mixture of polyfunctional alcohols which is or are partially esterified with unsaturated fatty acid, or with a mixture of unsaturated fatty acid and polyfunctional carboxylic acid or its anhydride. The non-carboxylic vinyl compound may be methyl methacrylate, styrene, vinyl toluene, vinyl acetate, methyl or ethyl acrylate, butyl methacrylate, acrylonitrile or methacrylonitrile, and the unsaturated carboxylic acid may be acrylic or methacrylic acid. The polyfunctional alcohol may be glycerol, pentaerythritol, ethylene glycol or diethylene glycol, and the partial ester may be prepared by heating such alcohol with linseed oil, dehydrated castor oil, wood oil or oiticica oil, either alone or with phthalic, isophthalic or adipic acid or anhydride.  The excess hydroxyl group content of the modified copolymers may be utilized in a cross-linking reaction with a urea or melamine formaldehyde resin, particularly a butylated urea or melamine formaldehyde resin, particularly in the production of stoving finishes.
Patent GB-212537-A (GB)
Title: Improvements relating to electrical protective devices
IPC: H01H71/16
Filed: 1924-02-26
Abstract: 212,537. Metropolitan-Vickers Electrical Co., Ltd.. (Assignees of Hineline, H. D., and Mylius, W. G.). March 5, 1923, [Convention date]. Thermal switches. -A bimetallic thermally-operated switch for use in electric protective devices comprises a number of superposed elements having an electrical length at least twice their linear length. In one modification, each element is slotted and somewhat M-shaped as shown in Fig. 6 being insulated from the next element except at one end so that the current has a sinuous path across each element and also through the pile. As shown the current normally passes through the end 2 of the device, by the bracket 6 to the pile of the thermal elements 17 whence it emerges to proceed along the bracket 8 to the other end. On the occurrence of excessive heating the strip 17 bends to bring the movable contact 26 into contact with the contact 27 and so to the terminal 13 to allow tripping as shown diagrammatically in Fig. 6. The superposed strips may be in parallel.
Patent GB-1358273-A (GB)
Title: Hose manufacture
IPC: B29C48/09
Filed: 1972-02-17
Abstract: 1358273 Extruding hose DUNLOP Ltd 17 Feb 1972 [18 Feb 1971] 4963/71 Heading B5A [Also in Division F2] A method of manufacturing hose comprises extruding an inner lining layer 2 of elastomeric material on to a mandrel 1, applying a reinforcement layer 3 to the inner lining layer 2, heating the assembly of the layers and mandrel to cause the inner lining layer 2 to expand and extrude through the reinforcement layer 3 in the form of nodules projecting from the reinforcement layer, smoothing the outer surface of the partly formed hose, extruding an outer covering layer 4 of elastomeric material and heating the hose so formed to completely cure the elastomeric material of the hose. The outer surface of the partly formed hose may be smoothed by removing or flattening the nodules. The latter may be removed by brushing with wire or leather brushes, scraping, grinding, scrubbing or cutting. The layer 2 and mandrel 1 may be frozen with liquid nitrogen to facilitate application of the reinforcement layer 3. The assembly of the layers 2, 3 and mandrel 1 may be heated to the curing temperature in a fluidized bed of glass particles so that the material of layer 2 is partially cured. The mandrel 1 may be nylon provided with a silicone mould release coating. The layers 2, 4 may be rubber and the layer 4 may be patterned. The layer 3 may be braided or helically wound wire or cord, e.g. steel. A temporary protection sheath 5 of non-vulcanizing rubber 5 may be extruded over the layer 4 prior to the final curing stage 1.
Patent GB-206072-A (GB)
Title: Improvements in railway rail ties or sleepers
IPC: E01B3/10
Filed: 1923-02-20
Abstract: 206,072. Palmer, R. Feb. 20, 1923. Sleepers, composite; sound and vibration, preventing.-A sleeper 1 is provided towards each end with a resilient metal strip 2 formed at its ends with open slots 3 for engagement with bolts 4 extending through the sleeper, the strip forming a pocket to hold yieldable material 5 on which the sleeper rests. Side plates 7 may be provided which are formed with vertical slots 8 to receive fastening bolts 9 passing through the sleeper. In addition, fastenings 10 passing through the plates and through the material 5 may be provided. The material 5 is preferably composed of tar residue mixed with sand and sawdust. Short anchoring blocks 6 are embedded in the tar, the blocks being formed with sockets to receive the ends of screws 5 adapted to secure the rails by means of fastening members M. A wooden block may be used as a substitute for the filling material 5.
Patent GB-850078-A (GB)
Title: Improvements relating to polarography
Inventor: NASH LEONARD FRANCIS
IPC: G01N27/48
Filed: 1957-02-13
Abstract: 850,078. Electric tests. EVERSHED & VIGNOLES Ltd. May 9, 1958 [Feb. 13, 1957], No. 4968/57. Class 37 In apparatus for recording variations in current, or rate of change of current, in a polarographic cell using a dropping mercury electrode, the apparatus including a recording point moving in relation to a chart surface under the influence of damping to produce a trace representing the required polarogram, means are provided for eliminating or greatly reducing the trace produced during periods when the current in the polarographic cell is changing rapidly owing to the falling of one drop of mercury and the growth of the next. As shown, Fig. 1, the output from a polarographic cell 1 is amplified at 13 and fed to the control winding 42 of a motor 25 which moves a pen 28 over the surface of a chart 30 until the position feedback to amplifier 13 from a potentiometer 21 balances the input from the cell. Damping is provided by a tachometer generator 29 driven by motor 25, the output of the generator 29 being fed via a variable gain amplifier 40 to a phase sensitive converter 52, the D.C. output of which is applied degeneratively to the amplifier 13. The sudden change to zero of the cell current when a drop of mercury falls generates a pulse in the secondary winding of a transformer 16; this pulse is fed to a square wave generator 33 to produce a pulse the duration of which is one-third the life-time of a mercury drop, and which is applied to the suppressor grid of a variable-mu pentode in amplifier 40, thus increasing the overall gain of the amplifier and giving the negative feedback to amplifier 13 a value sufficiently high to inhibit substantially the movement of the motor 25, and, therefore, of the pen 28. In the embodiment shown in Fig. 3, 13a is a straight amplifier and 13b amplifies and converts the output from 13a into A.C. to drive motor 25, normal damping only being provided by tachometer generator 29. Transformer 16 is connected between amplifiers 13a, 13b, and the pulses from square-wave generator 33 are used to bias off one stage of amplifier 13b thus stopping the motor 25 for the duration of the pulse. In a third embodiment (not shown) the pulses from square-wave generator 33 are used to energize a relay, thus interrupting the vibration of a platen of a recording device of the type described in Specification 832,243.